/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 15:39:44,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 15:39:44,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 15:39:44,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 15:39:44,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 15:39:44,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 15:39:44,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 15:39:44,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 15:39:44,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 15:39:44,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 15:39:44,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 15:39:44,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 15:39:44,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 15:39:44,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 15:39:44,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 15:39:44,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 15:39:44,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 15:39:44,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 15:39:44,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 15:39:44,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 15:39:44,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 15:39:44,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 15:39:44,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 15:39:44,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 15:39:44,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 15:39:44,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 15:39:44,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 15:39:44,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 15:39:44,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 15:39:44,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 15:39:44,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 15:39:44,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 15:39:44,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 15:39:44,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 15:39:44,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 15:39:44,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 15:39:44,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 15:39:44,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 15:39:44,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 15:39:44,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 15:39:44,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 15:39:44,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 15:39:44,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 15:39:44,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 15:39:44,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 15:39:44,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 15:39:44,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 15:39:44,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 15:39:44,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 15:39:44,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 15:39:44,999 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 15:39:45,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 15:39:45,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 15:39:45,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 15:39:45,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 15:39:45,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 15:39:45,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 15:39:45,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 15:39:45,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 15:39:45,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 15:39:45,003 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 15:39:45,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 15:39:45,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 15:39:45,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 15:39:45,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 15:39:45,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 15:39:45,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 15:39:45,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 15:39:45,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:39:45,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 15:39:45,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 15:39:45,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 15:39:45,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 15:39:45,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 15:39:45,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 15:39:45,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 15:39:45,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 15:39:45,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 15:39:45,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 15:39:45,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 15:39:45,486 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 15:39:45,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2022-10-16 15:39:45,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ca05131/5b9c1c2047d347f6b7a6c94134b207ec/FLAGcf26ed6ed [2022-10-16 15:39:46,512 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 15:39:46,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c [2022-10-16 15:39:46,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ca05131/5b9c1c2047d347f6b7a6c94134b207ec/FLAGcf26ed6ed [2022-10-16 15:39:46,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ca05131/5b9c1c2047d347f6b7a6c94134b207ec [2022-10-16 15:39:46,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 15:39:46,690 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 15:39:46,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 15:39:46,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 15:39:46,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 15:39:46,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:39:46" (1/1) ... [2022-10-16 15:39:46,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f83947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:46, skipping insertion in model container [2022-10-16 15:39:46,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:39:46" (1/1) ... [2022-10-16 15:39:46,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 15:39:46,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 15:39:46,960 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c[1509,1522] [2022-10-16 15:39:47,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:39:47,424 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 15:39:47,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-2.c[1509,1522] [2022-10-16 15:39:47,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 15:39:47,708 INFO L208 MainTranslator]: Completed translation [2022-10-16 15:39:47,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47 WrapperNode [2022-10-16 15:39:47,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 15:39:47,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 15:39:47,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 15:39:47,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 15:39:47,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:47,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:47,964 INFO L138 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3980 [2022-10-16 15:39:47,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 15:39:47,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 15:39:47,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 15:39:47,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 15:39:47,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:47,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 15:39:48,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 15:39:48,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 15:39:48,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 15:39:48,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (1/1) ... [2022-10-16 15:39:48,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 15:39:48,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 15:39:48,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 15:39:48,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 15:39:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 15:39:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-16 15:39:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-16 15:39:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:39:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-16 15:39:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 15:39:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-16 15:39:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-16 15:39:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-16 15:39:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-16 15:39:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-16 15:39:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-16 15:39:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 15:39:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-16 15:39:48,384 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-16 15:39:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-16 15:39:48,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-16 15:39:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:39:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-16 15:39:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:39:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-16 15:39:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 15:39:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-10-16 15:39:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-10-16 15:39:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:39:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-16 15:39:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 15:39:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-16 15:39:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-16 15:39:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 15:39:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 15:39:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 15:39:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 15:39:48,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 15:39:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-16 15:39:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-16 15:39:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-16 15:39:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-16 15:39:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:39:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-16 15:39:49,056 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 15:39:49,059 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 15:39:58,900 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 15:39:58,921 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 15:39:58,922 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 15:39:58,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:39:58 BoogieIcfgContainer [2022-10-16 15:39:58,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 15:39:58,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 15:39:58,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 15:39:58,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 15:39:58,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:39:46" (1/3) ... [2022-10-16 15:39:58,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f42554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:39:58, skipping insertion in model container [2022-10-16 15:39:58,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:39:47" (2/3) ... [2022-10-16 15:39:58,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f42554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:39:58, skipping insertion in model container [2022-10-16 15:39:58,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:39:58" (3/3) ... [2022-10-16 15:39:58,940 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-2.c [2022-10-16 15:39:58,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 15:39:58,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 15:39:59,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 15:39:59,149 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15181eee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 15:39:59,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 15:39:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 1626 states, 984 states have (on average 1.2367886178861789) internal successors, (1217), 1000 states have internal predecessors, (1217), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2022-10-16 15:39:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1291 [2022-10-16 15:39:59,318 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 15:39:59,320 INFO L195 NwaCegarLoop]: trace histogram [208, 208, 208, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 15:39:59,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__startrek_entry_pt_OSEK_Task_ts1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, __startrek_entry_pt_OSEK_Task_ts1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-10-16 15:39:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 15:39:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1353647574, now seen corresponding path program 1 times [2022-10-16 15:39:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 15:39:59,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531356347] [2022-10-16 15:39:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 15:39:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms